Creates a strong, focused beam of air
Boosts fan performance whilst maintaining quietness
For creating ultra-quiet desk or room fans that provide serious ventilation
The NV-AA1-12 leverages a sophisticated three-step procedure to significantly boost the NF-A12x25’s performance in ambient ventilation applications. Through the combination of helix energy recovery, progressive flow acceleration, and Venturi-effect volume enhancement, the NV-AA1-12 enables these fans to produce a strong, focused beam of air even when they run at near-inaudible noise levels.
The air that comes out of an axial fan has a high amount of rotational energy, which results in a helix-shaped flow path. The NV-AA1-12 recovers this rotational energy and uses it to accelerate the airflow. With the inside shape of the NV-AA1’s funnel carefully fine-tuned to the helix structure produced by the NF-A12x25 fan, it achieves an extremely high rate of energy recovery.
Following the principle of mass continuity, a fluid’s speed increases when it’s forced through a reduced cross-sectional area, so when the air is driven through the NV-AA1’s progressively narrowing funnel, air speed increases continuously until it reaches maximum velocity at the outlet.
In accord with the principle of conservation of energy, air pressure must decrease as air velocity increases (Bernoulli’s principle). This reduction in pressure that occurs when a fluid flows through a constriction, the so-called Venturi-effect, creates a suction force at the outlet, which draws in additional air from the sides and through the cuts of the NV-AA1’s funnel, thereby enhancing the airflow volume.
Do you require strong but quiet airflow on your desk or somewhere in your room? Combine the NV-AA1-12 and NF-A12x25 fan with the NV-FM1 multi-purpose pivoting fan mount! With its solid metal construction and flexible mounting options, the NV-FM1 is the ideal solution for putting or fixing a fan literally anywhere – from your desk or shelf to your walls or ceilings.
Installing the NV-AA1 couldn’t be easier: First, remove the fan’s pre-installed anti-vibration pads on the outlet side of the fan and replace them with the NV-AVG1 anti-vibration gasket that came with the fan so that there will be no gap between the fan and the NV-AA1. Then, screw-fix the NV-AA1 to the fan’s mounting holes using the supplied screws.
The NV-AA1-12’s aerodynamic design has been created and carefully fine-tuned for use with Noctua’s NF-A12x25 series fans. For home applications, the 5V PWM models with USB power adaptor cables can easily be run off power banks or standard USB power supplies. The NV-PS1 power supply is available for powering 12V models.
